func main()
	var t: int :: cui@inputInt()
	for(1, t)
		var n: int :: cui@inputInt()
		var m: int :: cui@inputInt()
		var k: int :: cui@inputInt()
		
		var ans: int :: 0
		
		var a0: int :: k % m
		if(m - n > a0)
			do ans :: a0
		end if
		do cui@print("\{ans}\n")
	end for
	
end func